On earth it's apparently "Spooky Szn" and that means people bust out their comfy sweaters and cozy up with a cup of something pumpkin spiced.
Around the galaxy, there isn't much that compares to the one day a year where people look like monsters. Have you been to the cantina on Mos Eisley? I rest my case.
Limited to just this holiday season and then they'll be retired this is a special batch of 1.25" pinback buttons featuring some Aurebesh Trick or treat. A carved pumpkin, a small child looking for chicky nuggies, the scariest astromech in the galaxy, and a bonus button of candy corn goodness.